Oil-feeding device for blast-furnaces



(Nb Model.)

I. EOKERT. :0IL FEEDING DEVICE FOR BLAST FURNACES.

No. 434,706. Patented Aug. 19, 1890.

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UNITED STATES PATENT OFFICE.

ISAAC ECKERT, OF READING, PENNSYLVANIA.

OIL-FEEDING DEVICE FOR BLAST-FURNACES.

SPECIFICATION forming part of Letters Patent No. 434,706, dated August19, 1890. Application filed March 16,1889. erial No. 303,514- (Nomodel.)

To all whom it may concern:

Be it known that I, ISAAC ECKERT, a citizen of the United States,residing at Reading, in

' in the manner hereinafter described, and

have invented in connection therewith such novel features as will befully pointed out in the claims at the'end of the specification.

In the drawings, Figure 1 shows a full side elevation of my device asattached to a blastfurnace, the latter being shown in section, and twomodifications of the oil-supplying device being shown, one on eitherside of the furnace. Fig. 2 is a detail of my supply-cylinder in centralvertical section.-

In Fig. 1 the blast-furnace is shown at A, and the entrance of thetuyeres therein is shown at A. These tuyeres, as shown at B, are of theordinary construction, and are supplied, as usual, from some form ofblast apparatus. Underneath these tuyeres there communicates with thesame the outlet of my device, and it is here, as at O, that the oil issupplied to the furnace. The blast in entering the furnace has to passthe mouth of the supply-pipe and create a suction, which results in theatomizing of the oil and its thorough distribution through the mass ofthe solid fuel or slag, or both, which may be used with the ore in theprocess of reduction.

The oil which is distributed at the point C comes, primarily, throughthe pipe 0, which descends, preferably, beneath the pillars whichordinarily support the vertical sides of the furnace and proceed to thesupply-cylinder, which is hereinafter described. About midway preferablyis placed a globe or other valve for the control of the flow of the oilthrough the pipe 0. This valve is shown at C The outlet end of this pipemay lie along the bottom of the tuyere or go through the middle thereof,and maybe horizontal, as shown at C or inclined, as shown in Fig. 1 at0*. In the latter case the end of the pipe is turned slightly, so as toapproximate to the horizontal and give the oil the proper direction atthe last moment. In this case also the end of the pipe is supported in abearing C while through the back of the pipe there extends a snuifer ora thick wire 0, adapted to be thrust at will into the tip of the pipefor the purpose of clearing the same of any accumulations of soot orthick oil which might tend to obstruct the action of the supply.

The oil is supplied by means of the action of the devices connected withthe supply-cylinder D. This cylinder is provided internally with aplunger D, fastened to a pistonrod D the two ends of which extendthrough the top and bottom of the cylinder through the properstuffing-boxes, as shown. This plunger is provided with a valve D whichopens in the direction of its effective stroke and is kept closed by theaction of the spring D. At one end of the piston-rod there is a weight Dwhich tends to depress the plunger and thus express the oil contained inthe cylinder through the opening D. The oil is supplied to thesupply-cylinder through the opening D from a tank E, which is placedabove the level of the top of said cylinder. The raising of the plungeris accomplished either by raising the piston-rod by means of a chain orother attachment at the top of the same or by means of compressed air orsteam admitted to the top and bottom of the cylinder, as shown in Fig.2. This pipe is shown at F, and has two openings F and F into the topand at the bottom of the cylinder, respectively. The branches leading tothese two openings are governed by the valves F and F, as shown, and bythe same the steam may be admitted to or shut off from. the two ends ofthe cylinder.

The operation of my device is as follows: Suppose the plunger to bedepressed and the oil to be admitted to the top of the cylinder throughthe opening D and the cylinder thus filled. This being accomplished, theplunger may be raised either, as described above, by the action of thechain at the upper end of the piston-rod or by the action of the steamICO or compressed air being allowed to come into operation underneaththe plunger by opening the valve F \Vhen the plunger has reached itshighest position, the steam or compressed air is shut off by the abovevalve and the action of the weight brought into play. N ow this weightmay act either by itself or in connect-ion with the pressure of steamupon the upper surface of the plunger by opening the valve F andallowing it to come in action upon the upper surface. By the opening ofthis valve more or less the amount of pressure of the oil sent throughthe pipe C may be varied according to the rate of blast and the qualityof the pig to be produced. For a quicker regulation of the flow thevalve 0 may be employed between the supply-cy1inder and the furnace.

hat I claim is 1. The combination, with the tuyere and a blast-furnace,of an oil-supply cylinder, the

supply-pipe from said cylinder extending into the tuyere outside itsentrance to the furnace, and a snutfer on the discharge end of said pipewithin the tuyere between the entrance of the tuyere to the furnace andthe end of the supply-pipe leading to said tuyere, substantially asshown and described.

2. The combination, with the furnace and the tuyere having an inclinednipple, of the supply-pipe from an oil-supply chamber, and a snuifer onthe end of said supply-pipe passing through said nipple in an inclineddirection and having its end within the tuyere substantially in linewith said tuyere, as set forth.

In testimony whereof I afiix my signature in presence of two witnesses.

ISAAC ECKERT.

.Vitnesses:

S. H. FISHER, A. M. BURKHOLDER.

